| --- |
| license: apache-2.0 |
| library_name: transformers |
| pipeline_tag: text-generation |
| language: |
| - en |
| tags: |
| - kozu |
| - reasoning |
| - trace-inversion |
| - synthetic-reasoning |
| - chain-of-thought |
| datasets: |
| - open-thoughts/OpenThoughts3-1.2M |
| --- |
| |
| <!-- ═══════════════════════════════════════════════════════════════ --> |
| <!-- Kozu AI · Kuiper-R1 Model Card --> |
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| <!-- Model Classes (set in .kz-base eyebrow via <span class="o">): --> |
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| <!-- · Planetary Class — mid-tier --> |
| <!-- · Stellar Class — frontier / large --> |
| <!-- --> |
| <!-- The class name and model name remain neutral and high-contrast. --> |
| <!-- ═══════════════════════════════════════════════════════════════ --> |
|
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| |
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| .kz-step { position: relative; min-width: 0; padding: 18px 16px 0 0; } |
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| .kz-chart { margin: 20px 0 28px; } |
| .kz-chart-title { font-family: var(--font-mono); font-size: 10px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; } |
| .kz-bar-row { display: grid; grid-template-columns: 110px 1fr 52px; align-items: center; gap: 12px; margin-bottom: 8px; } |
| .kz-bar-label { font-family: var(--font-mono); font-size: 11px; color: var(--fg-dim); text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } |
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| .kz-bar-fill { position: absolute; left: 0; top: 0; height: 100%; width: var(--pct, 0%); background: var(--orange); } |
| .kz-bar-fill.dim { background: color-mix(in oklab, var(--orange) 40%, var(--border-strong)); } |
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| <div class="kz"> |
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| <div class="kz-hero kz-hero--plain"> |
| <div class="kz-ident"> |
| <div class="kz-hero-grid"> |
| <div class="kz-hero-main"> |
| <h1 class="kz-name">Kuiper <span class="dim">R1</span></h1> |
| <span class="kz-base"><span class="dot"></span><span class="kz-class">Specialist Class</span> · 9.41B · Apache 2.0</span> |
| <div class="kz-chip-cloud"> |
| <span class="kz-chip"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M5 3h14v2H5zm0 16h14v2H5zM3 5h2v14H3zm16 0h2v14h-2zM9 7h6v2H9zm0 8h6v2H9zM7 9h2v6H7zm8 0h2v6h-2zm-4-8h2v2h-2zm0 20h2v2h-2zM1 11h2v2H1zm20 0h2v2h-2zm0-4h2v2h-2zm0 8h2v2h-2zM1 15h2v2H1zm0-8h2v2H1zm6-6h2v2H7zm8 0h2v2h-2zm0 20h2v2h-2zm-8 0h2v2H7z"/></svg>Trace inversion</span> |
| <span class="kz-chip"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 2h16v2H4zm0 18h16v2H4zM2 4h2v16H2zm18 0h2v16h-2zM6 16h2v2H6zm2-2h2v2H8zm-2-2h2v2H6z"/></svg>Synthetic reasoning</span> |
| <span class="kz-chip"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M10 20h4v2h-4zm0-16h4V2h-4zm0 6h4v2h-4zm4 8h4v2h-4zm0-12h4V4h-4zm0 2h4v2h-4zm4 8h4v2h-4zm0-8h4V6h-4zM6 18h4v2H6zM6 6h4V4H6zm0 2h4v2H6zm-4 8h4v2H2zm0-8h4V6H2zM2 6h2v12H2zm18 0h2v12h-2zm-8 6h2v8h-2zm-2-6h4v2h-4z"/></svg>Safetensors</span> |
| <span class="kz-chip live">Public release</span> |
| </div> |
| </div> |
| <div class="kz-hero-side"> |
| <span class="kz-signal-label">Release signal</span> |
| <strong class="kz-signal-value">Expand the trace.<br>Preserve the answer.</strong> |
| <span class="kz-signal-line"><span class="dot"></span>Weights available</span> |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| <div class="kz-section"> |
| <div class="kz-shead"> |
| <div class="kz-shead-left"> |
| <span class="kz-sglyph"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 2h16v2H4zm0 18h16v2H4zM2 4h2v16H2zm18 0h2v16h-2zm-9 5h2V7h-2zm0 8h2v-6h-2z"/></svg></span> |
| <h2 class="kz-stitle">Overview</h2> |
| </div> |
| <span class="kz-snum">01</span> |
| </div> |
| <div class="kz-sbody"> |
| <p class="kz-lead">Kuiper-R1 reconstructs full, readable reasoning from a problem, its final answer, and compressed reasoning bubbles.</p> |
| <p>Each result follows a three-tag contract: <code><synthetic_trace></code>, <code><verification_note></code>, and <code><final></code>. The final answer is preserved byte-for-byte, while the reconstructed trace is explicitly labeled synthetic.</p> |
| <p>Use Kuiper-R1 for reasoning-dataset augmentation, interpretability review, and research into reasoning compression and expansion. Do not present its synthetic traces as another model's hidden chain-of-thought.</p> |
| </div> |
| </div> |
| |
| <div class="kz-section"> |
| <div class="kz-shead"> |
| <div class="kz-shead-left"> |
| <span class="kz-sglyph"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M5 3h14v2H5zm0 16h14v2H5zM3 5h2v14H3zm16 0h2v14h-2zM9 7h6v2H9zm0 8h6v2H9zM7 9h2v6H7zm8 0h2v6h-2zm-4-8h2v2h-2zm0 20h2v2h-2zM1 11h2v2H1zm20 0h2v2h-2zm0-4h2v2h-2zm0 8h2v2h-2zM1 15h2v2H1zm0-8h2v2H1zm6-6h2v2H7zm8 0h2v2h-2zm0 20h2v2h-2zm-8 0h2v2H7z"/></svg></span> |
| <h2 class="kz-stitle">Specifications</h2> |
| </div> |
| <span class="kz-snum">02</span> |
| </div> |
| <div class="kz-sbody"> |
| <div class="kz-stack kz-stack--asym"> |
| <div class="kz-card"> |
| <div class="kz-card-head"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M5 3h14v2H5zm0 16h14v2H5zM3 5h2v14H3zm16 0h2v14h-2zM9 7h6v2H9zm0 8h6v2H9zM7 9h2v6H7zm8 0h2v6h-2zm-4-8h2v2h-2zm0 20h2v2h-2zM1 11h2v2H1zm20 0h2v2h-2zm0-4h2v2h-2zm0 8h2v2h-2zM1 15h2v2H1zm0-8h2v2H1zm6-6h2v2H7zm8 0h2v2h-2zm0 20h2v2h-2zm-8 0h2v2H7z"/></svg>Architecture</div> |
| <div class="kz-row"><span class="kz-key">Type</span><span class="kz-val">Qwen3.5 conditional generation</span></div> |
| <div class="kz-row"><span class="kz-key">Params</span><span class="kz-val">9.41B</span></div> |
| <div class="kz-row"><span class="kz-key">Context</span><span class="kz-val">262,144 tokens</span></div> |
| <div class="kz-row"><span class="kz-key">Artifact</span><span class="kz-val">BF16 safetensors</span></div> |
| </div> |
| <div class="kz-card"> |
| <div class="kz-card-head"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 14h2v6H4zm6 0h2v6h-2zm-4-2h4v2H6zm0 8h4v2H6zm-4-4h2v2H2zm20-8h-4V6h4zM10 16h12v2H10zm4-8H2V6h12zm6-4v2h-2V4zm0 6V8h-2v2zm-6-8h4v2h-4zm0 10h4v-2h-4zm-2-8h2v2h-2zm0 6h2V8h-2z"/></svg>Training</div> |
| <div class="kz-row"><span class="kz-key">Method</span><span class="kz-val">QLoRA SFT → ORPO → merge</span></div> |
| <div class="kz-row"><span class="kz-key">SFT rows</span><span class="kz-val">3,000</span></div> |
| <div class="kz-row"><span class="kz-key">Preference</span><span class="kz-val">87 scored pairs</span></div> |
| <div class="kz-row"><span class="kz-key">Data</span><span class="kz-val">OpenThoughts3-1.2M</span></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| <div class="kz-section"> |
| <div class="kz-shead"> |
| <div class="kz-shead-left"> |
| <span class="kz-sglyph"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 2h16v2H4zm0 18h16v2H4zM2 4h2v16H2zm18 0h2v16h-2zM6 16h2v2H6zm2-2h2v2H8zm-2-2h2v2H6z"/></svg></span> |
| <h2 class="kz-stitle">Usage</h2> |
| </div> |
| <span class="kz-snum">03</span> |
| </div> |
| <div class="kz-sbody"> |
| <p>Serve with <code>vLLM</code>. Disable the default thinking pass so the requested three-tag contract can use the full output budget.</p> |
| <div class="kz-stack" style="grid-template-columns: 1fr;"> |
| <div class="kz-card"> |
| <div class="kz-card-head"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 14h2v6H4zm6 0h2v6h-2zm-4-2h4v2H6zm0 8h4v2H6zm-4-4h2v2H2zm20-8h-4V6h4zM10 16h12v2H10zm4-8H2V6h12zm6-4v2h-2V4zm0 6V8h-2v2zm-6-8h4v2h-4zm0 10h4v-2h-4zm-2-8h2v2h-2zm0 6h2V8h-2z"/></svg>Recommended Samplers</div> |
| <div class="kz-row"><span class="kz-key">Temperature</span><span class="kz-val">0.4</span></div> |
| <div class="kz-row"><span class="kz-key">Repetition</span><span class="kz-val">1.1</span></div> |
| <div class="kz-row"><span class="kz-key">Thinking</span><span class="kz-val">Disabled</span></div> |
| <div class="kz-row"><span class="kz-key">Model len</span><span class="kz-val">8,192 served</span></div> |
| </div> |
| </div> |
| <p style="margin-top: 24px;">Start the private checkpoint:</p> |
| <pre><code>vllm serve Michael-Kozu/Kuiper-R1 \ |
| --served-model-name kuiper-r1 \ |
| --max-model-len 8192 \ |
| --gpu-memory-utilization 0.85 \ |
| --skip-mm-profiling \ |
| --trust-remote-code</code></pre> |
| <p>Send an OpenAI-compatible request:</p> |
| <pre><code>{ |
| "model": "kuiper-r1", |
| "messages": [ |
| { |
| "role": "system", |
| "content": "You are Kuiper, a reasoning-trace inversion model." |
| }, |
| { |
| "role": "user", |
| "content": "Problem:\n[problem text]\n\nAnswer:\n[exact final answer]\n\nReasoning Bubbles:\n- [bubble one]\n- [bubble two]\n\nReconstruct the full reasoning trace." |
| } |
| ], |
| "temperature": 0.4, |
| "repetition_penalty": 1.1, |
| "chat_template_kwargs": {"enable_thinking": false} |
| }</code></pre> |
| </div> |
| </div> |
| |
| <div class="kz-section"> |
| <div class="kz-shead"> |
| <div class="kz-shead-left"> |
| <span class="kz-sglyph"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 14h2v6H4zm6 0h2v6h-2zm-4-2h4v2H6zm0 8h4v2H6zm-4-4h2v2H2zm20-8h-4V6h4zM10 16h12v2H10zm4-8H2V6h12zm6-4v2h-2V4zm0 6V8h-2v2zm-6-8h4v2h-4zm0 10h4v-2h-4zm-2-8h2v2h-2zm0 6h2V8h-2z"/></svg></span> |
| <h2 class="kz-stitle">Training Details</h2> |
| </div> |
| <span class="kz-snum">04</span> |
| </div> |
| <div class="kz-sbody"> |
| <p>Training uses domain-balanced science, math, and code rows from <a href="https://huggingface.co/datasets/open-thoughts/OpenThoughts3-1.2M">OpenThoughts3-1.2M</a>. Reasoning traces are compressed into extractive bubbles deterministically, without an additional model call.</p> |
| <div class="kz-metrics"> |
| <div class="kz-metric"><span class="kz-metric-value">3,000</span><span class="kz-metric-label">SFT examples</span></div> |
| <div class="kz-metric"><span class="kz-metric-value">1</span><span class="kz-metric-label">SFT epoch</span></div> |
| <div class="kz-metric"><span class="kz-metric-value">87</span><span class="kz-metric-label">ORPO pairs</span></div> |
| </div> |
| <ul> |
| <li>Training split: 1,531 science, 1,001 math, and 468 code examples.</li> |
| <li>Compression is extractive at a target ratio of 0.28 with 3–24 bubbles.</li> |
| <li>The held-out DeepSeek-V4 benchmark lineage is disjoint from the QwQ-32B training lineage.</li> |
| </ul> |
| </div> |
| </div> |
| |
| <div class="kz-section"> |
| <div class="kz-shead"> |
| <div class="kz-shead-left"> |
| <span class="kz-sglyph"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 2h16v2H4zm0 18h16v2H4zM2 4h2v16H2zm18 0h2v16h-2zm-9 8h2v6h-2zm-4 2h2v4H7zm8-8h2v12h-2z"/></svg></span> |
| <h2 class="kz-stitle">Benchmarks</h2> |
| </div> |
| <span class="kz-snum">05</span> |
| </div> |
| <div class="kz-sbody"> |
| <div class="kz-chart"> |
| <div class="kz-chart-title">Kuiper-R1 release · held-out n=200</div> |
| <div class="kz-bar-row"> |
| <span class="kz-bar-label">Answer exact</span> |
| <div class="kz-bar-track"><div class="kz-bar-fill" style="--pct:82%"></div></div> |
| <span class="kz-bar-val">0.820</span> |
| </div> |
| <div class="kz-bar-row"> |
| <span class="kz-bar-label">Format valid</span> |
| <div class="kz-bar-track"><div class="kz-bar-fill" style="--pct:88%"></div></div> |
| <span class="kz-bar-val">0.880</span> |
| </div> |
| <div class="kz-bar-row"> |
| <span class="kz-bar-label">Expansion</span> |
| <div class="kz-bar-track"><div class="kz-bar-fill" style="--pct:76.9%"></div></div> |
| <span class="kz-bar-val">0.769</span> |
| </div> |
| <div class="kz-bar-row"> |
| <span class="kz-bar-label">Overall</span> |
| <div class="kz-bar-track"><div class="kz-bar-fill" style="--pct:50.4%"></div></div> |
| <span class="kz-bar-val">0.504</span> |
| </div> |
| </div> |
| <table> |
| <thead><tr><th>Metric</th><th>Base</th><th>Kuiper-R1</th></tr></thead> |
| <tbody> |
| <tr><td>Final answer preserved · exact</td><td class="num">0.155</td><td class="num hi">0.820</td></tr> |
| <tr><td>Format valid · 3-tag contract</td><td class="num hi">0.980</td><td class="num">0.880</td></tr> |
| <tr><td>Expansion quality</td><td class="num hi">0.791</td><td class="num">0.769</td></tr> |
| <tr><td>Semantic consistency</td><td class="num hi">0.708</td><td class="num">0.535</td></tr> |
| <tr><td>No invented tool outputs</td><td class="num">1.000</td><td class="num">1.000</td></tr> |
| <tr><td>Overall</td><td class="num">0.329</td><td class="num hi">0.504</td></tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| |
| <div class="kz-section"> |
| <div class="kz-shead"> |
| <div class="kz-shead-left"> |
| <span class="kz-sglyph"><svg class="kz-icon" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 2h16v2H4zM2 4h2v10H2zm18 0h2v10h-2zM4 14h2v2H4zm2 2h2v2H6zm4 4h4v2h-4zm10-6h-2v2h2zm-2 2h-2v2h2zm-2 2h-2v2h2zm-6 0H8v2h2z"/></svg></span> |
| <h2 class="kz-stitle">Limitations & License</h2> |
| </div> |
| <span class="kz-snum">06</span> |
| </div> |
| <div class="kz-sbody"> |
| <ul> |
| <li>Bubble informativeness bounds trace quality; terse inputs provide little evidence to expand.</li> |
| <li>The verification note is a construction-time consistency statement, not an external verifier.</li> |
| <li>The release improves exact answer preservation but trails the untouched base on raw format validity and semantic consistency.</li> |
| </ul> |
| <p>The checkpoint is released under the <strong>Apache License 2.0</strong>.</p> |
| </div> |
| </div> |
| |
| <div class="kz-foot"> |
| <span>Kozu AI</span> |
| <span>Turning the laws of reality into unparalleled creation.</span> |
| </div> |
| |
| </div> |
| |
